Marketwatch with the details:
The increase to a seasonally adjusted index level of 70.6 marked the first gain in industrial output for Japan in six months and may be a sign that Japan's decline in production and exports are slowly coming to an end.
The data came in better than consensus. Economists surveyed by Bloomberg News had expected a milder 0.8% increase in Japan's March industrial output.
"The fact that IP is rising is hardly surprising, though, as the extremely sharp fall in previous months was an over-adjustment," said Andreas Schuster, strategist at CLSA in Tokyo.
However, the bad news is "that a recovery to a level that brings capacity utilization back to a ratio that ensures good profitability will be taking a very long time," he said.